what does old oil look like i.e. an old ail leak not replaired

[vtr02]

replaced my altenator today and i noticed that my gear box had oil on it... it didnt seem fresh and was very thick... i had a seal replaced and i dont think it was cleaned after tho... or should i be worried lol?

[mtpagey]

clean it up, if you look in a few days time and you see oil there again then you've got a leak :)